8.
Advanced Setup Menu
The advanced setup menu is accessed by pressing and holding the
button when the message 'advanced' shows up at the end of the
regular setup menu, and allows for setting less frequently changed
parameters.
8.1
Range Mode
There are two mode settings that are available to accommodate the
wide scope of electric vehicles. The high range mode should be used
with shunts that are under 1mOhm, such as in electric motorcycles
and small electric cars that draw hundreds of amps. In this mode, the
Cycle Analyst will display current to the nearest 0.1 A and will show
power in kW. For shunts that are over 1 mOhm but less than 10 mOhm,
the LowRange mode must be selected. This will increase the
resolution to 0.01 A.
8.2
Averaging
In an electric vehicle, the current and voltage can fluctuate rapidly
under normal use, making the instantaneous values difficult to read.
These values are averaged before display. Short averaging times
allow you to get a better real time feel for the power fluctuations, while
longer averaging times produce a stable reading that is easier to
record. The range is 1-7, which correlates to 0.025 seconds to 1.6
seconds between display updates. The default setting is 5 (0.4 sec).
8.3
Set Rshunt
The Cycle Analyst is calibrated by programming a resistance value for
the current sensing shunt. If you are using a known shunt resistor, then
as a first estimate this value can be programmed directly in mOhm.
This will usually get the meter accurate to within 3%. For highest
accuracy, the shunt value should be calibrated so that the displayed
amperage matches that of a known current reference, which may not
be precisely the same as the mOhm rating on the resistor. If the current
is reading too low then the shunt resistance value needs to be
decreased, and vice versa. Allowed values are:
·
0.763 to 9.999 mOhm in Low Range Mode
·
0.0763 to 0.9999 mOhm in High Range Mode
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